fret vs get at

fret is a noun but get at is not a noun.

Word	Noun	Adjective	Verb	Adverb
fret	Yes	No	Yes	No
get at	No	No	Yes	No

As verbs, get at is a hypernym of fret; that is, get at is a word with a broader meaning than fret:

Other hypernyms of fret include annoy, bother, chafe, devil, get to, gravel, irritate, nark, nettle, rag, rile, vex.

As verbs, get at is a hypernym of fret; that is, get at is a word with a broader meaning than fret:

Other hypernyms of fret include annoy, bother, chafe, devil, get to, gravel, irritate, nark, nettle, rag, rile, vex.

fret (noun)	get at (noun)
a small bar of metal across the fingerboard of a musical instrument; when the string is stopped by a finger at the metal bar it will produce a note of the desired pitch
an ornamental pattern consisting of repeated vertical and horizontal lines (often in relief)
a spot that has been worn away by abrasion or erosion
agitation resulting from active worry

fret (verb)	get at (verb)
wear away or erode	cause annoyance in; disturb, especially by minor irritations
remove soil or rock	reach or gain access to
cause friction	influence by corruption
be too tight; rub or press
decorate with an interlaced design
carve a pattern into
be agitated or irritated
cause annoyance in
gnaw into; make resentful or angry
worry unnecessarily or excessively
become or make sore by or as if by rubbing
provide (a musical instrument) with frets